Metadata:
  Identification_Information:
    Citation:
      Citation_Information:
        Originator: U.S. Geological Survey
        Originator: Coastal and Marine Geology Program
        Publication_Date: 2013
        Title: f991cp.m77t and f991cp.h77t: MGD77T data and header files for single-beam bathymetry data for field activity F-9-91-CP in Central Pacific from 09/24/1991 to 09/25/1991
        Geospatial_Data_Presentation_Form: tab-delimited ASCII text files
        Publication_Information:
          Publication_Place: St. Petersburg, FL
          Publisher: U.S. Geological Survey
        Online_Linkage: http://pubs.usgs.gov/ds/757/data/m77t/f991cp.m77t
        Larger_Work_Citation:
          Citation_Information:
            Originator: Heather A. Schreppel
            Originator: Carolyn H. Degnan
            Originator: Dan R. Metzger
            Originator: Shawn V. Dadisman
            Publication_Date: 2013
            Title: Archive of U.S. Geological Survey selected single-beam bathymetry datasets, 1969-2000
            Edition: 1.0
            Geospatial_Data_Presentation_Form: Digital Document
            Series_Information:
              Series_Name: U.S. Geological Survey Data Series
              Issue_Identification: 757
            Publication_Information:
              Publication_Place: St. Petersburg, FL
              Publisher: U.S. Geological Survey
            Online_Linkage: http://pubs.usgs.gov/ds/757
    Description:
      Abstract:
        Single-beam bathymetry data along with GPS navigation data was collected as part of the U.S. Geological Survey cruise F-9-91-CP. The cruise was conducted in the Central Pacific from September 24 to September 25, 1991. The chief scientists was Jim Gardner from the USGS Coastal and Marine Geology office in Menlo Park, CA. The geophysical source was a 10 kilohertz (kHz) and 3.5 kHz system.
        These data are reformatted from space-delimited ASCII text files located in the Coastal and Marine Geology Program (CMGP) InfoBank field activity catalog at http://walrus.wr.usgs.gov/infobank/f/f991cp/html/f-9-91-cp.meta.html into MGD77T format provided by the NOAA's National Geophysical Data Center(NGDC). The MGD77T format includes a header (documentation) file (.h77t) and a data file (.m77t). More information regarding this format can be found in the publication listed in the Cross_reference section of this metadata file.
      Purpose: These data and information are intended for science researchers,students, policy makers, and general public. These data are not to be used for navigation purposes. The data are reformatted into MGD77T standard format for inclusion into NOAA's NGDC geophysical database. From there the data will be made available to GeoMapApp (http://www.geomapapp.org/) and Virtual Ocean (http://www.virtualocean.org/) Earth-browsing software. Access to the data is also provided via the USGS Coastal and Marine Geoscience Data System (http://cmgds.marine.usgs.gov/).
      Supplemental_Information:
        The navigation data are digitally collected using a Global Positioning System (GPS). The GPS is a space-based satellite navigation system maintained by the United States government and is accessible using a GPS receiver. Data accuracy is based on individual receiver models, and most GPS data are collected in the WGS84 horizontal datum.
        The Data Acquisition, Processing, and Storage (DAPS) group performs a number of processing steps to the navigation data once it is collected which can vary by cruise. These steps are outlined within the header information in each individual digital navigation (.0xx, .6xx) space-delimited ASCII data file. The header information rows are indicated by lines beginning with the character "!". The single-beam bathymetry data are collected both digitally and as analog records with 10 kHz and 3.5 kHz systems. The bathymetry datasets were commonly processed using three programs: (A) Batred, which calculates depth from travel times; (B) nosamebathy, which eliminates identical adjacent bathymetry values; and (C) nozerobathy, which removes records with a depth value of "0.0". However, not all of the datasets included in this report were processed with one or more of these programs. If the data was not run through these programs it was reformatted using the most recent "best file" on InfoBank, often these were categorized by InfoBank as raw bathymetry files. Details about which processing steps were taken by the DAPS group can be found in the header information of the bathymetry and navigation ASCII files downloaded from InfoBank.
        Prior to reformatting the data into MGD77T format the "best" bathymetry and navigation files from InfoBank were edited to remove the header information and reformatted using Excel 2010 to separate the data into columns based on tabs. Next the bathymetry and navigation files were merged based on time and latitude and longitude. The combined navigation and bathymetry was saved as a .txt file. This combined bathymetry and navigation file was used as an input file into the GEODAS ReFormat to MDG77T program developed by NOAA's NGDC. The program outputs the reformatted data as a tab-delimited .m77t file. The program is available for use at: http://www.ngdc.noaa.gov/mgg/gdas/gx_announce.Html. For information regarding fields found within the MGD77T files, please refer to the publication, Hittelman and others (2010), found within the Cross-reference section of this metadata file.
        Each MGD77T data file also has an accompanying header file (.h77t). The fields within these header files are also defined in the aforementioned publication. Fields are populated based on InfoBank metadata records, digital data file headers, and accompanying publications (often cruise reports) for the survey. If a field is unknown or did not apply to the dataset it is intentionally left blank.
    Time_Period_of_Content:
      Time_Period_Information:
        Range_of_Dates/Times:
          Beginning_Date: 19910924
          Ending_Date: 19910925
      Currentness_Reference: ground condition
    Status:
      Progress: Complete
      Maintenance_and_Update_Frequency: None planned
    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: -159.35820
        East_Bounding_Coordinate: -157.32581
        North_Bounding_Coordinate: 21.41710
        South_Bounding_Coordinate: 20.45990
    Keywords:
      Theme:
        Theme_Keyword_Thesaurus: USGS Metadata Identifier
        Theme_Keyword: USGS:43dbefa2-4c9b-4be0-bf16-2d29c74eb765
      Theme:
        Theme_Keyword_Thesaurus: ISO 19115 Topic Category
        Theme_Keyword: geoscientificinformation
        Theme_Keyword: oceans
      Theme:
        Theme_Keyword_Thesaurus: None
        Theme_Keyword: Marine Geology
        Theme_Keyword: Marine Geophysics
        Theme_Keyword: Single-beam Bathymetry
        Theme_Keyword: Water Depth
        Theme_Keyword: Seafloor Topography
      Theme:
        Theme_Keyword_Thesaurus: Data Categories for Marine Planning
        Theme_Keyword: distributions
        Theme_Keyword: bathymetry and elevation
      Theme:
        Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) Keywords
        Theme_Keyword: single-beam echo sounder
        Theme_Keyword: marine geophysics
      Theme:
        Theme_Keyword_Thesaurus: USGS Thesaurus
        Theme_Keyword: single-beam echo sounder
        Theme_Keyword: bathymetry measurement
        Theme_Keyword: bathymetry
        Theme_Keyword: marine geophysics
      Place:
        Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
        Place_Keyword: State of Hawaii
        Place_Keyword: Central Pacific Ocean
        Place_Keyword: Pacific Ocean
    Access_Constraints: None. These data are held in the public domain.
    Use_Constraints:
      This information is not intended for navigational purposes.

      Read and fully comprehend the metadata prior to data use. Uses of these
      data should not violate the spatial resolution of the data. Where
      these data are used in combination with other data of different resolution,
      the resolution of the combined output will be limited by the lowest
      resolution of all the data.

      Acknowledge the U.S. Geological Survey in products derived from these data.
      Share data products developed using these data with the U.S. Geological
      Survey.
    Point_of_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Heather A. Schreppel
          Contact_Organization: Cherokee Nation Technology Solutions, contracted to U.S. Geological Survey
        Contact_Position: IT Management Specialist/Database Support Assistant
        Contact_Address:
          Address_Type: mailing and physical
          Address: 600 4th Street South
          City: St. Petersburg
          State_or_Province: FL
          Postal_Code: 33701
          Country: USA
        Contact_Voice_Telephone: (727) 803-8747, ext. 3013
        Contact_Electronic_Mail_Address: hschreppel@usgs.gov
    Data_Set_Credit: Jim Gardner (Chief Scientist, USGS Western Region);
    Cross_Reference:
      Citation_Information:
        Originator: Hittelman, Allen M., Groman, Robert C., Haworth, Richard T., Holcombe, Troy L., McHendrie, Graig, Smith, Stuart M., and Metzger, Dan R.
        Publication_Date: 2010
        Title: The marine geophysical data exchange format - MGD77 / MGD77T
        Publication_Information:
          Publication_Place: Boulder, CO
          Publisher: National Geophysical Data Center, National Oceanic and Atmospheric Administration
        Other_Citation_Details: 25 p.
        Online_Linkage: http://www.ngdc.noaa.gov/mgg/dat/geodas/docs/mgd77.pdf
  Data_Quality_Information:
    Attribute_Accuracy:
      Attribute_Accuracy_Report: The validity or accuracy of bathymetry and navigation data is highly qualitative and depends on equipment and operating condition variables. Data quality is unknown, MGD77T files were formatted from InfoBank files identified as best available version.
    Logical_Consistency_Report: This data set is from one field activity with unknown instrument calibrations. Processed bathymetric depths were spot checked based on latitude and longitude against the Global Multi-Resolution Topography (GMRT) grid within GeoMapApp to ensure reasonable values.
    Completeness_Report:
      Start and end date/times of data according to DAPS group. Reasons for gaps in data varies by cruise, see InfoBank for more details.
      >Navigation Data (f-9-91-cp.050 [SINS])
      >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
      >199109240636000    199109240704000
      >199109240714000    199109240727000
      >199109240734000    199109240838000
      >199109240845000    199109240905000
      >199109240911000    199109241346000
      >199109241355000    199109241359000
      >199109241406000    199109241406000
      >199109241412000    199109241412000
      >199109241419000    199109250208000
      >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
      >Bathymetry Data (f-9-91-cp.300_050)
      >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
      >199109240636000    199109240636000
      >199109240642000    199109240642000
      >199109240648000    199109240648000
      >199109240654000    199109240654000
      >199109240700000    199109240700000
      >199109240718000    199109240718000
      >199109240724000    199109240724000
      >199109240736000    199109240736000
      >199109240742010    199109240742010
      >199109240748000    199109240748000
      >199109240754000    199109240754000
      >199109240800000    199109240800000
      >199109240806000    199109240806000
      >199109240812000    199109240812000
      >199109240818000    199109240818000
      >199109240824000    199109240824000
      >199109240830000    199109240830000
      >199109240836000    199109240836000
      >199109240848000    199109240848000
      >199109240854000    199109240854000
      >199109240900000    199109240900000
      >199109240912000    199109240912000
      >199109240918000    199109240918000
      >199109240924000    199109240924000
      >199109240930000    199109240930000
      >199109240936000    199109240936000
      >199109240942000    199109240942000
      >199109240948000    199109240948000
      >199109240954000    199109240954000
      >199109241000000    199109241000000
      >199109241006000    199109241006000
      >199109241012000    199109241012000
      >199109241018000    199109241018000
      >199109241024000    199109241024000
      >199109241030000    199109241030000
      >199109241036000    199109241036000
      >199109241042000    199109241042000
      >199109241048000    199109241048000
      >199109241054000    199109241054000
      >199109241100000    199109241100000
      >199109241106000    199109241106000
      >199109241112000    199109241112000
      >199109241118000    199109241118000
      >199109241124000    199109241124000
      >199109241130000    199109241130000
      >199109241136000    199109241136000
      >199109241142000    199109241142000
      >199109241148000    199109241148000
      >199109241154000    199109241154000
      >199109241200000    199109241200000
      >199109241206000    199109241206000
      >199109241212000    199109241212000
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      >199109241224000    199109241224000
      >199109241230000    199109241230000
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      >199109241242000    199109241242000
      >199109241248000    199109241248000
      >199109241254000    199109241254000
      >199109241300000    199109241300000
      >199109241306000    199109241306000
      >199109241312000    199109241312000
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      >199109241330000    199109241330000
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      >199109241424000    199109241424000
      >199109241430000    199109241430000
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      >199109241442000    199109241442000
      >199109241448000    199109241448000
      >199109241454000    199109241454000
      >199109241500000    199109241500000
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      >199109241524000    199109241524000
      >199109241530000    199109241530000
      >199109241536000    199109241536000
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      >199109241554000    199109241554000
      >199109241600000    199109241600000
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      >199109241630000    199109241630000
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      >199109241730000    199109241730000
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      >199109241742000    199109241742000
      >199109241748000    199109241748000
      >199109241754000    199109241754000
      >199109241800000    199109241800000
      >199109241806000    199109241806000
      >199109241812000    199109241812000
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      >199109241954000    199109241954000
      >199109242000000    199109242000000
      >199109242006000    199109242006000
      >199109242012000    199109242012000
      >199109242018000    199109242018000
      >199109242024000    199109242024000
      >199109242030000    199109242030000
      >199109242036000    199109242036000
      >199109242042000    199109242042000
      >199109242048000    199109242048000
      >199109242054000    199109242054000
      >199109242100000    199109242100000
      >199109242106000    199109242106000
      >199109242112000    199109242112000
      >199109242118000    199109242118000
      >199109242124000    199109242124000
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      >199109242218000    199109242218000
      >199109242224000    199109242224000
      >199109242230000    199109242230000
      >199109242236000    199109242236000
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      >199109242300000    199109242300000
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      >199109242312000    199109242312000
      >199109242318000    199109242318000
      >199109242324000    199109242324000
      >199109242330000    199109242330000
      >199109242336000    199109242336000
      >199109242342000    199109242342000
      >199109242348000    199109242348000
      >199109242354000    199109242354000
      >199109250000000    199109250000000
      >199109250006000    199109250006000
      >199109250012000    199109250012000
      >199109250018000    199109250018000
      >199109250024000    199109250024000
      >199109250030000    199109250030000
      >199109250036000    199109250036000
      >199109250042000    199109250042000
      >199109250048000    199109250048000
      >199109250054000    199109250054000
      >199109250100000    199109250100000
      >199109250106000    199109250106000
      >199109250112000    199109250112000
      >199109250118000    199109250118000
      >199109250124000    199109250124000
      >199109250130000    199109250130000
      >199109250136000    199109250136000
      >199109250142000    199109250142000
      >199109250148000    199109250148000
      >199109250154000    199109250154000
      >199109250200000    199109250200000
      >199109250206000    199109250206000
      >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Positional_Accuracy:
      Horizontal_Positional_Accuracy:
        Horizontal_Positional_Accuracy_Report: Unspecified
      Vertical_Positional_Accuracy:
        Vertical_Positional_Accuracy_Report: Unspecified
    Lineage:
      Process_Step:
        Process_Description:
          Below are the details about which processing steps were taken by the DAPS group that can be found in the header information of the ASCII files downloaded from InfoBank.
          Navigation Data
          >Converted to time format with year at start.
          >
          >10/01/91 CAROLYN PMG:[CAROLYN.RANI]F991CP.050;1
          >ISDMNL$DUA12:[PMG.REFMT]REFORMAT.EXE;
          >Integrated navigation (SINS) data
          >simply reformatted from the DXFMT file sent by Rani, 9/30/91
          >
        Process_Date: 19960205
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
              Contact_Person: Carolyn H. Degnan
            Contact_Position: Geophysicist
            Contact_Address:
              Address_Type: mailing and physical address
              Address: USGS Pacific Coastal & Marine Science Center, 400 Natural Bridges Drive
              City: Santa Cruz
              State_or_Province: CA
              Postal_Code: 95060-5792
              Country: USA
            Contact_Voice_Telephone: (831) 460-7452
            Contact_Facsimile_Telephone: (831) 427-4748
            Contact_Electronic_Mail_Address: infobank@octopus.wr.usgs.gov
      Process_Step:
        Process_Description:
          Below are the details about which processing steps were taken by the DAPS group that can be found in the header information of the ASCII files downloaded from InfoBank.
          Bathymetry Data
          >10/31/1998  /lion/f/f991cp/bath/f-9-91-cp.300_050
          >/bear/programs/edit/automerge/automerge
          >
          >Input was...
          >Converted to time format with year at start.
          >
          >10/01/91 CAROLYN PMG:[CAROLYN.RANI]F991CP.300;1
          >ISDMNL$DUA12:[PMG.REFMT]REFORMAT.EXE;
          >Raw depth (bathymetry) data
          >simply reformatted from the DXFMT file sent by Rani, 9/30/91
          >contained only uncorrected bathy
          >
          >Input was...
          >Converted to time format with year at start.
          >
          >10/01/91 CAROLYN PMG:[CAROLYN.RANI]F991CP.050;1
          >ISDMNL$DUA12:[PMG.REFMT]REFORMAT.EXE;
          >Integrated navigation (SINS) data
          >simply reformatted from the DXFMT file sent by Rani, 9/30/91
          >
          >time, lat, long, time(sec) to nearest nav fix, data values
        Process_Date: 19981031
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
              Contact_Person: Carolyn H. Degnan
            Contact_Position: Geophysicist
            Contact_Address:
              Address_Type: mailing and physical address
              Address: USGS Pacific Coastal & Marine Science Center, 400 Natural Bridges Drive
              City: Santa Cruz
              State_or_Province: CA
              Postal_Code: 95060-5792
              Country: USA
            Contact_Voice_Telephone: (831) 460-7452
            Contact_Facsimile_Telephone: (831) 427-4748
            Contact_Electronic_Mail_Address: infobank@octopus.wr.usgs.gov
      Process_Step:
        Process_Description: A navigation file identified as the best available version in InfoBank for this cruise was copied and saved as an ASCII text file to be combined with the best available bathymetry file for processing to MGD77T format. For details regarding processing steps performed on these best available files from InfoBank, please see the header information within the original files at http://walrus.wr.usgs.gov/infobank/ and previous processing steps.
        Source_Used_Citation_Abbreviation: f-9-91-cp.050.txt
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: f991cpnav.txt
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: Cherokee Nation Technology Solutions, contracted to the U.S. Geological Survey
              Contact_Person: Heather A. Schreppel
            Contact_Position: IT Management Specialist/Database Support Assistant
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 600 4th Street South
              City: St. Petersburg
              State_or_Province: FL
              Postal_Code: 33701
              Country: USA
            Contact_Voice_Telephone: 727-803-8747 ext. 3013
            Contact_Electronic_Mail_Address: hschreppel@usgs.gov
      Process_Step:
        Process_Description: A bathymetry file identified as the best available version in InfoBank for this cruise was copied and saved as an ASCII text file to be combined with the best available navigation file for processing to MGD77T format. For details regarding processing steps performed on these best available files from InfoBank, please see the header information within the original files at http://walrus.wr.usgs.gov/infobank/.
        Source_Used_Citation_Abbreviation: f-9-91-cp.300_050.txt
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: f991cpbathy.txt
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: Cherokee Nation Technology Solutions, contracted to the U.S. Geological Survey
              Contact_Person: Heather A. Schreppel
            Contact_Position: IT Management Specialist/Database Support Assistant
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 600 4th Street South
              City: St. Petersburg
              State_or_Province: FL
              Postal_Code: 33701
              Country: USA
            Contact_Voice_Telephone: 727-803-8747 ext. 3013
            Contact_Electronic_Mail_Address: hschreppel@usgs.gov
      Process_Step:
        Process_Description: The best available bathymetry and navigation text files were concatenated into one tab-delimited file using Excel 2010 and several Visual Basic Applications (VBA) macros. InfoBank header information is removed and text is broken into columns and the rows are combined based on the presence of the same values in the time and latitude and longitude columns.
        Source_Used_Citation_Abbreviation: f991cpbathy.txt, f991cpnav.txt
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: f991cpall.txt
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: Cherokee Nation Technology Solutions, contracted to the U.S. Geological Survey
              Contact_Person: Heather A. Schreppel
            Contact_Position: IT Management Specialist/Database Support Assistant
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 600 4th Street South
              City: St. Petersburg
              State_or_Province: FL
              Postal_Code: 33701
              Country: USA
            Contact_Voice_Telephone: 727-803-8747 ext. 3013
            Contact_Electronic_Mail_Address: hschreppel@usgs.gov
      Process_Step:
        Process_Description: The combined bathymetry and navigation file was used as an input file into the GEODAS ReFormat to MDG77T program developed by NOAA's NGDC. The program outputs the reformatted data as a tab-delimited .m77t file. The program is available for use at: http://www.ngdc.noaa.gov/mgg/gdas/gx_announce.Html
        Source_Used_Citation_Abbreviation: f991cpall.txt
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: f991cp.m77t
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: Cherokee Nation Technology Solutions, contracted to the U.S. Geological Survey
              Contact_Person: Heather A. Schreppel
            Contact_Position: IT Management Specialist/Database Support Assistant
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 600 4th Street South
              City: St. Petersburg
              State_or_Province: FL
              Postal_Code: 33701
              Country: USA
            Contact_Voice_Telephone: 727-803-8747 ext. 3013
            Contact_Electronic_Mail_Address: hschreppel@usgs.gov
      Process_Step:
        Process_Description: To create the accompanying header files (.h77t), an excel spreadsheet was supplied from NGDC with already populated required field names. For information for header field requirements and definitions see: http://www.ngdc.noaa.gov/mgg/dat/geodas/docs/mgd77.pdf. When creating a header file for each cruise, fields were populated in the header spreadsheet based on InfoBank metadata records, digital data file headers, and accompanying publications (often cruise reports) for the survey. If a field was unknown or did not apply to the dataset it was intentionally left blank.
        Source_Used_Citation_Abbreviation: http://walrus.wr.usgs.gov/infobank/f/f991cp/html/f-9-91-cp.meta.html.
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: f991cp.h77t
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: Cherokee Nation Technology Solutions, contracted to the U.S. Geological Survey
              Contact_Person: Heather A. Schreppel
            Contact_Position: IT Management Specialist/Database Support Assistant
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 600 4th Street South
              City: St. Petersburg
              State_or_Province: FL
              Postal_Code: 33701
              Country: USA
            Contact_Voice_Telephone: 727-803-8747 ext. 3013
            Contact_Electronic_Mail_Address: hschreppel@usgs.gov
      Process_Step:
        Process_Description: Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog.
        Process_Date: 20161229
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: U.S. Geological Survey
              Contact_Person: Alan O. Allwardt
            Contact_Position: Contractor -- Information Specialist
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 2885 Mission Street
              City: Santa Cruz
              State_or_Province: CA
              Postal_Code: 95060
            Contact_Voice_Telephone: 831-460-7551
            Contact_Facsimile_Telephone: 831-427-4748
            Contact_Electronic_Mail_Address: aallwardt@usgs.gov
      Process_Step:
        Process_Description: Added keywords section with USGS persistent identifier as theme keyword.
        Process_Date: 20201013
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: U.S. Geological Survey
              Contact_Person: VeeAnn A. Cross
            Contact_Position: Marine Geologist
            Contact_Address:
              Address_Type: Mailing and Physical
              Address: 384 Woods Hole Road
              City: Woods Hole
              State_or_Province: MA
              Postal_Code: 02543-1598
            Contact_Voice_Telephone: 508-548-8700 x2251
            Contact_Facsimile_Telephone: 508-457-2310
            Contact_Electronic_Mail_Address: vatnipp@usgs.gov
  Spatial_Data_Organization_Information:
    Indirect_Spatial_Reference: Central Pacific Ocean from 09/24/1991 to 09/25/1991
    Direct_Spatial_Reference_Method: Point
    Point_and_Vector_Object_Information:
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type: Point
  Spatial_Reference_Information:
    Horizontal_Coordinate_System_Definition:
      Geographic:
        Latitude_Resolution: 0.000001
        Longitude_Resolution: 0.000001
        Geographic_Coordinate_Units: Decimal degrees
      Geodetic_Model:
        Horizontal_Datum_Name: D_WGS_1984
        Ellipsoid_Name: WGS_1984
        Semi-major_Axis: 6378137.000000
        Denominator_of_Flattening_Ratio: 298.25722210100002
  Entity_and_Attribute_Information:
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: f991cp.m77t
        Entity_Type_Definition: MGD77T single-beam bathymetry data file for F991CP
        Entity_Type_Definition_Source: NOAA's National Geophysical Data Center, See Hittelman and others (2010) Cross_Reference section above for details about the MGD77T format and citation information.
      Attribute:
        Attribute_Label: SURVEY_ID
        Attribute_Definition: Survey identifier supplied by the contributing organization
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: This identifier varies in format and is supplied by the contributing organization
      Attribute:
        Attribute_Label: TIMEZONE
        Attribute_Definition: Time-zone correction
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: In our datasets, no correction was applied. All values equal 0.
      Attribute:
        Attribute_Label: DATE
        Attribute_Definition: Survey Date
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 19910924
            Range_Domain_Maximum: 19910925
            Attribute_Units_of_Measure: YYYYMMDD, (four digit year, two digit month, two digit day)
      Attribute:
        Attribute_Label: TIME
        Attribute_Definition: Time
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 0
            Range_Domain_Maximum: 2359
            Attribute_Units_of_Measure: hours and decimal minutes
      Attribute:
        Attribute_Label: LAT
        Attribute_Definition: Latitude
        Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 20.4599
            Range_Domain_Maximum: 21.4171
            Attribute_Units_of_Measure: decimal degrees
      Attribute:
        Attribute_Label: LON
        Attribute_Definition: Longitude
        Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: -159.3582
            Range_Domain_Maximum: -157.3258
            Attribute_Units_of_Measure: decimal degrees
      Attribute:
        Attribute_Label: POS_TYPE
        Attribute_Definition: Indicates how lat/lon was obtained
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 1
            Enumerated_Domain_Value_Definition: Observed fix
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 3
            Enumerated_Domain_Value_Definition: Interpolated fix
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: nil
            Enumerated_Domain_Value_Definition: unspecified
            Enumerated_Domain_Value_Definition_Source: NGDC
      Attribute:
        Attribute_Label: BAT_TTIME
        Attribute_Definition: Bathymetry, 2-way travel time
        Attribute_Definition_Source: U.S. Geological Survey
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 4.44667
            Range_Domain_Maximum: 6.25467
            Attribute_Units_of_Measure: seconds
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: f991cp.h77t
        Entity_Type_Definition: MGD77T single-beam bathymetry header file for F-9-91-CP
        Entity_Type_Definition_Source: NOAA's National Geophysical Data Center, See Hittelman and others (2010) Cross_Reference section above for details about the MGD77T format and citation information.
      Attribute:
        Attribute_Label: SURVEY_ID
        Attribute_Definition: Survey identifier supplied by the contributing organization
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: This identifier varies in format and is supplied by the contributing organization
      Attribute:
        Attribute_Label: FORMAT_77
        Attribute_Definition: Format Acronym
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: PARAMS_CO
        Attribute_Definition: Parameters surveyed codes.
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Status of geophysical parameters for this survey. See Hittelman and others (2010) from the Cross_Reference section above for details.
      Attribute:
        Attribute_Label: INST_SRC
        Attribute_Definition: Source Institution
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: COUNTRY
        Attribute_Definition: Country
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: PLATFORM
        Attribute_Definition: Platform name
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: PLAT_TYPCO
        Attribute_Definition: Platform type code
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: nil
            Enumerated_Domain_Value_Definition: Unspecified
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 1
            Enumerated_Domain_Value_Definition: Surface Ship
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 2
            Enumerated_Domain_Value_Definition: Submersible Ship
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 3
            Enumerated_Domain_Value_Definition: Aircraft
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 4
            Enumerated_Domain_Value_Definition: Buoy
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 5
            Enumerated_Domain_Value_Definition: Mobile land
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 6
            Enumerated_Domain_Value_Definition: Fixed land
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 7
            Enumerated_Domain_Value_Definition: Deep tow
            Enumerated_Domain_Value_Definition_Source: NGDC
      Attribute:
        Attribute_Label: PLAT_TYP
        Attribute_Definition: Platform type
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: CHIEF
        Attribute_Definition: Chief Scientist(s)
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: PROJECT
        Attribute_Definition: Project, cruise, leg
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: FUNDING
        Attribute_Definition: funding
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: DATE_DEP
        Attribute_Definition: survey departure date
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 19770427
            Range_Domain_Maximum: 20000629
            Attribute_Units_of_Measure: YYYYMMDD (four digit year, two digit month, two digit day)
      Attribute:
        Attribute_Label: PORT_DEP
        Attribute_Definition: port of departure
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: DATE_ARR
        Attribute_Definition: survey arrival date
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 19770427
            Range_Domain_Maximum: 20000629
            Attribute_Units_of_Measure: YYYYMMDD (four digit year, two digit month, two digit day)
      Attribute:
        Attribute_Label: PORT_ARR
        Attribute_Definition: port of arrival
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: NAV_INSTR
        Attribute_Definition: navigation instrumentation
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: POS_INFO
        Attribute_Definition: position determination method/ geodetic datum
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: BATH_INSTR
        Attribute_Definition: bathymetry instrumentation
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: BATH_ADD
        Attribute_Definition: additional forms of bathymetry
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: LAT_TOP
        Attribute_Definition: Latitude
        Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 16.38240
            Range_Domain_Maximum: 89.98766
            Attribute_Units_of_Measure: decimal degrees
      Attribute:
        Attribute_Label: LAT_BOTTOM
        Attribute_Definition: Latitude
        Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 16.38240
            Range_Domain_Maximum: 89.98766
            Attribute_Units_of_Measure: decimal degrees
      Attribute:
        Attribute_Label: LON_LEFT
        Attribute_Definition: Longitude
        Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 10.30551
            Range_Domain_Maximum: -117.13802
            Attribute_Units_of_Measure: decimal degrees
      Attribute:
        Attribute_Label: LON_RIGHT
        Attribute_Definition: Longitude
        Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 10.30551
            Range_Domain_Maximum: -117.13802
            Attribute_Units_of_Measure: decimal degrees
      Attribute:
        Attribute_Label: BATH_DRATE
        Attribute_Definition: general digitizing rate of bathymetry
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: SOUND_VEL
        Attribute_Definition: assumed sound velocity
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: VDATUM_CO
        Attribute_Definition: bathymetric vertical datum
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: In our datasets, no correction was applied. All values equal 0.
    Overview_Description:
      Entity_and_Attribute_Overview: Bathymetry and navigation data for U.S. Geological Survey bathymetry survey F-9-91-CP in MGD77T format.
      Entity_and_Attribute_Detail_Citation: Attributes are obtained from MGD77T data files created from the navigation and bathymetry best files. MGD77T is the standard, defined data format used for geophysical data in the National Geophysical Data Center. The MGD77T format contains more attributes than defined here. Attributes that were null for this data were not included. Details about other attributes can be found in Hittelman and others (2010), see Cross_Reference section above for citation details.
  Metadata_Reference_Information:
    Metadata_Date: 20201013
    Metadata_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Heather A. Schreppel
          Contact_Organization: Cherokee Nation Technology Solutions, contracted to the U.S. Geological Survey
        Contact_Position: IT Management Specialist/Database Support Assistant
        Contact_Address:
          Address_Type: mailing and physical address
          Address: U.S. Geological Survey, 600 Fourth Street South
          City: St. Petersburg
          State_or_Province: FL
          Postal_Code: 33701
          Country: USA
        Contact_Voice_Telephone: (727) 803-8747, ext. 3013
        Contact_Electronic_Mail_Address: hschreppel@usgs.gov
    Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
    Metadata_Standard_Version: FGDC-STD-001-1998